“A massive gun battle between rival drug and migrant trafficking gangs near the U.S. border Thursday left 21 people dead and at least six others wounded, prosecutors said.

The fire fight occurred in a sparsely populated area about 12 miles (20 kilometers) from the Arizona border, near the city of Nogales, that is considered a prime corridor for immigrant and drug smuggling.”

http://www.cbsnews.com/stories/2010/07/01/world/main6639523.shtml